session - Cookie not being created and stored websphere -

i've web project deployed in 6.1 server creates , stores cookie session management. i've upgraded v7.0.0.27 , cookie not being stored nor created. i'm using jdk1.6_19, web module 2.5 , ejb 3.0.

this way create cookie:

    cookie cookie = new cookie(user, divison);     cookie.setmaxage(integer.max_value);     cookie.setpath("/");     res.addcookie( cookie ); 

i've spent 2 weeks on nothing seems working. i've patched rsa have 7.5.5.5.001 fix, i've gone thru websphere console setting cookies, i've deployed same application in tomcat , cookie getting created in websphere v7.0.0.27 can't make it.

any idea or solution issue appreciated

i know question last year, had trouble last few days , found answer:

websphere 7 has date format expire date (yy instead of yyyy). details, please have @ ticket.

hope able help.